|
CN111946538A
|
|
Underground hydraulic turbine
|
|
US2021017815A1
|
|
Polycrystalline diamond compact drill bit and oil well drilling apparatus having the same
|
|
CN110385430A
|
|
A kind of powder body material of 3D printing
|
|
CN110230471A
|
|
Polycrystalline diamond compact bit and oil-well drilling equipment with the drill bit
|
|
CN110106420A
|
|
A kind of Co based high-temperature alloy and its preparation method and application
|
|
CN111894471A
|
|
Drill bit with through extending channel and manufacturing method thereof
|
|
CN109973021A
|
|
A kind of drill bit of integrated nozzle structure
|
|
CN109807643A
|
|
A kind of intelligent oil drill produced system
|
|
US2020024903A1
|
|
Matrix body PDC drill bit
|
|
CN109694977A
|
|
A kind of diamond impregnated preparation method and impregnated diamond, the preparation method of impregnated bit and impregnated bit
|
|
CN109465461A
|
|
A kind of tungsten carbide stiff dough anti-friction bearing and preparation method thereof
|
|
US2019345775A1
|
|
Drill bit nozzle and drill bit
|
|
CN109185190A
|
|
A kind of shaft work matching process of counter-rotating fan and counter-rotating fan
|
|
CN108994310A
|
|
A kind of High Strength Wear-Resistance Material, friction material and its plasma transferred arc welding production technology
|
|
CN108842132A
|
|
A kind of metal parts case hardening process
|
|
CN108838634A
|
|
A kind of diaphragm coupling and its pipe fitting part production method
|
|
CN108746911A
|
|
A kind of preparation facilities of diamond compact journal bearing
|
|
CN108593212A
|
|
The bearing detection device and pressure-bearing detection method of engineering machinery cooling device
|
|
CN108607998A
|
|
A kind of metal sintering friction material, preparation method and friction plate
|
|
CN108220950A
|
|
A kind of face coat and preparation method for hydraulic motor
|
